Firmware is what defines what kind of hardware your client is talking to. You can add multiple hardware components into a firmware file. Just remember that you have physical limitations like the number of screw terminals available on the client. You can also download firmware from the store to further understand how it is being built.
Professional and sophisticated electronic hardware projects needn't be complicated, expensive and time consuming. Use an extensive and growing library of drivers in combination with low cost hardware and create products like a pro without hassle.
